My remote is an older Craftsman 3 button remote with dip switches on the circuit board. I took it apart to clean it as the buttons were sticking. I did not touch the dip switches and nothing happened that would change anything on the remote. When I put it back together and tried it with the door, it would not respond. The red led on the remote was bright but the opener would not respond. When I was taking it apart, before I got the battery out I accidentally hit the button and it opened the door. The hard wired switch next to the door works. I do not see any learn button or anything. I unplugged opener and removed battery from remote for 30 seconds as suggested to reset. Still does not work. It makes no sense as I did not do anything to the remote to change anything. Please let me know if you have any ideas. Thank you! Valhalla